| 摘要 |
Disclosed is a phosphor having high luminance and chromaticity y equal to that of BAM:Eu, which hardly suffers from decrease in luminance during operation of a light-emitting device. Specifically disclosed is a phosphor represented by the following general formula: aAO.bEuO.DO.cSiO2 (wherein A represents at least one selected from Ca, Sr and Ba, D represents at least one selected from Mg and Zn, 2.970 <= a <= 3.500, 0.001 <= b <= 0.030, and 1.900 <= c <= 2.100). This phosphor is characterized in that the peak intensity at 1490 cm-1 is 0.02-0.8 when the peak intensity at 565 cm-1 is taken as 1 in the spectrum obtained by photoacoustic spectroscopy.
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